Back-rest arrangement for chairs



Jan. 6,1931. w. s. FERRIS BACK REST ARRANGEMENT FOR CHAIRS Filed Aug. 8,1928 18 If I Patented 1m 1931 i V a j 1,788,018

- "UNITED S T- or mi m Referring now in detail to that embodi- WILLIAMs. reams, or ELKHABTJ IAN anox-nns'rj ARRenen ENT on crIeIns Applicationfiled August-8, 1928. 'Serial No; 298,253. I

This invention relates to improvements in casters 6 by whichithe chairmay be easily 7 back rest arrangements for chairs and it co nmovedabout. 1 o, sists of the matters hereinafter describedand ournalled inthe top and intermediate more particularly pointed out in the append-Spiders 3 and 5--'rcsp t1v y, s Seat p s 7 5 d lai I f the topend ofwhich carriesa spider 8 to" The primary object-t the invention isto iWhichais fixed: as jlne mhei'fil As'shown provide in connection with abench workers e salfi Seat member? ls'm epf Wood and chain anovelarrangement for supporting at-eachs de thereof is'dependmg metallicthe back rest, which when so desired, maybe flange 1 I Said flange formspartof an angle 19 folded down toward the seat to-reduce the b W Qhissecured to both said seat and 66' overall height of the chair so thatit may then pider and ezftends from the rear end of said be placedbeneath the bench, out of the way, a fl P lIlt spaced from the. frontend wh n t i I v r thereof In the 'forward'end ofithe flange Anotherobject of. the invention is to pro at B d 0f t t is & O g lldinah 15vide an arrangementwhich permits of an ads $1019 1 p i: -f65i justmentof the back rest so that it may be A G f B Wlth the chalr thus ial'vrdemoved into the positionmost convenient for l transversely bowed c restth Occupant f th h i v I member 12 also-made of wood and secured toThese objects of the invention, as Well: as the v q sldetheleof 18 itflat 3 H others, together with the many advantages d Whlch are benttoform 4:- Ti thereof will more fully appear as I proceed whlch o y extendr r br from ith ifi ti the back rest member. Said back rest mem-, In thedrawing her Is normallysupported upon the top ends Fig. lis aperspective View ofabench workslde arms, each indicated as a Whole 1 erschair, embodying; my improved backrest g- 1 y the numeral P y' sflldvarrangement, with the parts in theposition arms are made 50 as o becepablelofbemg th occupy h th h i i ready f lengthened or shortened asdesired and to- Fin. 2 is a view in side elevation of the seat h fi 'm ke arm of a p and back rest arrangement with the parts;gltudlnallyiadiustable pi l bottom arm shown in the position they occupyin Fig.1. m r n e pe v y h Fig. 8 isaview similar to Fig; 2'with the f m15b 15 P 'Q Q Phlrfdhty of back rest in its folded down position. e e nly Spaced d-l 15c Fi 4 i a t l i f th Seat d -to.recelvescrews l carriedby the arm mem back rest arrangement with the parts in the T fi t e d ofthe W members. it h ocupy in Fig. I V are offset inwardly andarepivotally con-o: Fig. 5 is a perspective View of a folding: m l by th l5 to e a y joint member embodied in the improved are me s. 14 Q l Qk rh; ranaement V i he bottom end of each arm member l5 b 1sdisposedbetween the top ends'of a folding r f thn qt d H a rule 'joint member 17 bymeans of a screw or O w I 'fi fl e i ac =bolt1 18wh1ch isthreaded into a suitable companymg drawlng, 1 indlcates as a. wholleOpening m m 9 of the flange 1O m F l-P l ithe i h thus also'provides thepivotal connection be includes a plurality ()1 legs 2r-2 the top cn'oswe Said" rm n flanges. The Oint of are C1lsPoSed 1n grouped lekullonmember 17 comprises spaced plates 17**-"17 and are connected together bymeans of top, hi h re n tgdf ther l g dg bottom and intermediate spiders34 and 5 by a web 17 of a length shorterthan said respectively. Thebottom ends of said legs l t p r e I arespread laterally to give thenecessary 19 indicates a link or brace whichiat its stability and areequipped with the usual rear end isdisposed betweenthe bottom ends i 51.

end of the arm member 15 below the bolt 18 imposed upon the back restmember by the otal connection 18, at the same time turning v the backrest about the rivets lo'so that the of the plates 17 17? of the member17 and V is pivoted thereto by a bolt or rivet 20. The

forward end of said link engages the inner face of the associated flange10 and carries a bolt andwasher 21 which may be secured at the desiredpoint along the slot 11..

When the back rest is in its position of use as shown in Fig. 2, theextreme bottom engages against the Web 17' of the joint member 17 andthe bottom end ofsaid web engages against the top edge of the linker bar19. Thus such rearward pressure as is occupant of the chair willnaturally hold the back rest arms in position. However, as sume that itis desired to store the chair under a work bench. All that it isnecessary to do is to swing the back rest and arms-l5 downwardly andforwardly aboutthe pivrange the back rest men'ober as sho-wn in Figs. 1and 2.

By the bolt 21 and slotll connection of the forward ends of the 1ink 19and thelon'gitudinal adj nstme'nt between the arm parts 15 -15 it isapparent that the back rest may bereadilyadjnsted in position withrespect toc the seat-and by means of the folding ruleoi'nt 17, the backrest maybe so disposedwith respect to the seat that the chair as a whole7 may be readily slid under a bench.

The parts are few in nnmber may be. readily assembled and are efficientfor their intended purpose.

While in describing the invention, 1 have referred in detail to the formand arrange. ment ot the various parts thereof, the same is to beconsidered as illustrative only so that I do not wish to be limitedthereto'except as may be specifically pointedout in the appended claims;V l

I claim as my invention 1. 'A backrest arrangement for chairs comprisingin combination with a seat member having a depending-flange along eachside,-

comprising spaced plates and a web.

2. A back rest arrangement for chairs comprising in combination with aseat member,

back rest supporting arms andabackresb operatively "connected with thetop ends thereof. means pivotally connecting the bottomends oi said armsto saw. seat member at the sides thereof, joint members each pivoted atone end .to said seat coincident with said arms, and brace members eachconnected at one end to'said joint members and each adjustably securedatits other end to said seat member.

3. A back rest arrangement for chairs com-- prising in combination witha seat member, back rest supporting arms, ann a back rest operativelyconnected to the top ends thereof, ieansproviding a depending flange ateach side ofsai'd seat member having a longitudh na l slot in one endthereof, means pr aiding a pivotal connection between the rear ends ofsaid flanges and the bottom ends of said arms respectively-joint memberseach pivoted at one end coincident with said pivotal connection betweensaid flanges and arm ends respectively, and brace members each adjustbly connected at its front" end in the slot in anassociated flange andconnected to its other.

end with the one end of said joint members.

l, A back rest arrangement for chairs comprising in combination with aseat, a pair of longitudinal extensible back rest supporting arms, abackrest member conn'ectec to the top ends of said arms, oint members eachincluding side platesand a connecting web, which side plates engage atoneend ripen opposite sides of an associated arm end, means connectingsaid end of said plates and arms respectively tosaid seat, and bracemembers each ustably connected at its front end to said seat towards thefront thereof and connected at its rear end'to the other end of anassociated joint member between the side plates thereof. I In testimonywhereof, I have hereunto set my hand, his 3rd day of August, 1928.

lVILLIAM S. FERRET.

with a slot therein, a pair of longitudinally.

extensible side arms, a back rest member con-.

nected to the top ends of said arms, a member comprising spacedplatesand a web, means

